A cacophony of frogs and toads call out as they emerge from the mud in early spring and start looking for mates.

This lake has a slimy, protein-rich foam accumulating on the bank. 

Rainscaping is a way to reduce the impact of stormwater runoff, especially in concrete laden cities.

Data from fish raceways show changes in oxygen levels as the water passes through raceways.

Increasing deer populations are causing issues in some areas.

The temperature in different depths of a compose pile can vary widely.

The sights and sounds of a spring thunderstorm in Iowa, caused by extremes in weather fronts.

Stockbridge dampers are placed on power lines and light poles to prevent oscillation through resonance.

Radio frequency identification tags are used to track cattle and allow computers to gather real time data on a cow's movement, health and production.

This litter of pigs all have the same parents, but look different from their parents and each other.

The sound of a coyote pack can be heard at night. 

Urban rain gardens can help reduce the amount of storm water going through the system and allow more water to infiltrate through the ground.

Engineers use expansion joints to allow bridges to expand and contract in response to temperature fluctuations.

Green roofs are planted in an effort to reduce a variety of environmental impacts.

The water depth and quality of this small farm pond have changed because of soil disposition.

Pella Tulip Time is planned in advance to make sure that tulips are properly prepared and planted, but tulips bloom at different times.

Igneous rocks in the form of granite rocks are all over Iowa, however there are no active volcanoes or active plates.

The Cordova Tower is the tallest observation tower in a public park in the Midwest.